删除对象时内存不释放 - 在正确的ARC释放方式上不清楚(Memory not releasing when removing object - unclear on proper way to release in ARC)

 Xcode 5，iOS7 
 
 我有一个应用程序在循环中创建UILabels，并在数组中引用它们。 在反复调用'创建'方法后，我注意到我的内存使用量增加了。 我想清除数组和相关的UILabel对象来释放内存，因为它看起来不会出现在我当前的代码中。 相反，每次通过我的循环时，我都可以看到我的记忆体使用量在增加，而且从未减少 我目前正在使用Storyboard和ARC。 
 
 我如何正确地释放UILabels，因为看起来ARC没有为我做这件事？ 
 
@implementation myViewController
CGPoint tmpPoint;
NSMutableArray *allDots;
/// more code here
//
// This method is called repeatedly from another loop
-(void)createLabels{
//remove any previous labels
//I'm pretty sure this is not actually clearing the UILabels but rather the pointer to the labels?
    for(short i=0; i<10; i++){
        UILabel *junkDot=[allDots objectAtIndex:i];
        junkDot=nil;
    }
// Either of these statements should clear the references/pointers
//        [allDots removeAllObjects];
    allDots=[[NSMutableArray alloc] init];

//create a new group of labels
    for(short i=0; i<10; i++){
        // code to generate Point values
        [self makeLabel:tmpPoint];
    }
}

-(UILabel*)makeLabel:(CGPoint)thePoint{
    CGRect xFrame=CGRectMake(thePoint.x, thePoint.y, 40, 20);
    UILabel *tmpLabel=[[UILabel alloc] initWithFrame:xFrame];

    [self.view addSubview:tmpLabel];

    [allDots addObject:tmpLabel];

    return tmpLabel;
}

Xcode 5, iOS7
 
I have an app that creates UILabels in a loop, referencing them in an array. After repeatedly calling the 'creation' method I'm noticing that my memory usage increases. I'd like to clear the array and the related UILabel objects to free the memory, as it appears it not happening with my current code. Instead, each time through my loops I can see my memory usage increasing and never decreasing. I am currently using Storyboards and ARC.
 
How can I properly release the UILabels since it seems ARC is not doing it for me?
 
@implementation myViewController
CGPoint tmpPoint;
NSMutableArray *allDots;
/// more code here
//
// This method is called repeatedly from another loop
-(void)createLabels{
//remove any previous labels
//I'm pretty sure this is not actually clearing the UILabels but rather the pointer to the labels?
    for(short i=0; i<10; i++){
        UILabel *junkDot=[allDots objectAtIndex:i];
        junkDot=nil;
    }
// Either of these statements should clear the references/pointers
//        [allDots removeAllObjects];
    allDots=[[NSMutableArray alloc] init];

//create a new group of labels
    for(short i=0; i<10; i++){
        // code to generate Point values
        [self makeLabel:tmpPoint];
    }
}

-(UILabel*)makeLabel:(CGPoint)thePoint{
    CGRect xFrame=CGRectMake(thePoint.x, thePoint.y, 40, 20);
    UILabel *tmpLabel=[[UILabel alloc] initWithFrame:xFrame];

    [self.view addSubview:tmpLabel];

    [allDots addObject:tmpLabel];

    return tmpLabel;
}

原文：https://stackoverflow.com/questions/24477167